Locust - There is a built-in way to get the test duration?

Question

I would like to get the duration of the test I started. A possibility is to use the on_test_start and on_test_stop to set up a measurement in order to keep track of time, but I wanted to know if there was a "built-in" function created specifically to provide the duration. I know usually the duration is provided by the user but I would like to keep track of it directly in the script. In order to show it through an exported CSV file or through a Prometheus metric or a point in an InfluxDB.

I'm aware that the last two options aren't really suitable for this idea

Thank you for your suggestions